I've driven until 8 rated miles remaining. When I started the last leg of the trip 42 miles (if I recall correctly), I received a warning that I would reach my destination with less than 0. I immediately slowed down (approx 10 mph below the speed limit). Fortunately, very little traffic where I was. Over the next ~10 miles I began to recover range, and climbed above 0%. I reached my destination with 2% remaining. I had a backup location planned ~ 6 miles before my destination to charge, so I felt some range anxiety, but not much. However, I would have been pissed if it shut down with range showing.
However, now that I'm writing this, I just thought of a situation that could cause the car to shutdown early that I hadn't previously thought of. When I was running close, I was really babying my range, no quick accelerations, no high speed, i.e. Just feathering the throttle so gingerly to keep amp draw low. My old Prius would have killed me in a 1/4 race at that point. Anyway, let's assume I had ~10 miles of range remaining and I could see the supercharger 1/2 mile in the distance. I decided to gun it and caused the pack volts to drop low enough (if only for a moment) to cause the battery protection to disengage and shut me down. Maybe this would be a way where the rated range couldn't account for my sudden acceleration and resulting dropping of the battery volts into "danger" zone causing a shutdown.